Improvement in machines for boarding leather



L. .P., WASON. Machines for Boarding Leather.

No. 218,908. Pa-tented Aug. 26,1879.

vent-or. .Zgmanl? Wee-ran- MFETERS. PHOTO-UTNOQRAPMER, WAS INGTIJN. D. G

UNITED STATES PATENT OEEIoE.

LYMAN P. WASON, OF SALEM, MASSACHUSETTS.

IMPROVEMENT IN MACHINES .FOR BOARDING LEATHER.

Specification forming part of Letters Patent No. 218,908, dated August26, 1879; application filed July 28, 1879.

To all whom it may concern:

Be it known that I, LYMAN P. Wilson, of Salem, of the county of Essexand State of Massachusetts, have invented a new and useful Improvementin Machines for Boarding Leather 5 and do hereby declare the same to bedescribed in the following specification and represented in theaccompanying drawings, of which Figure 1 is a side elevation, and Fig. 2a transverse section, of a leather-boarding machine provided with myinvention, the nature of which is fully set forth in the claimhereinafter presented.

In such drawings, A denotes a table having a curved bed, B, of corkfixed to and extending up from it, as shown. With such bedareciprocating or pendulous boarder, O,- is em ployed in effecting theboarding of a sheet of leather in a manner well known to moroccoleathermanufacturers, the lower surface of the body of the boarder having acorkcovering or lining, a, curved convexly in parallelism, or thereabout,with the concave upper surface of the bed. This boarder is fixed to thelower end of a pendulous shank, b, which, near its upper end, is pivotedto a movable pivot-carrier, 0, adapted to slide up and down betweenstationary vertical and parallel guides d d, fixed in a frame, D. Afurcated connectingrod,' E, having its prongs jointed to the boarder,serves to connect such boarder with the wrist e of a crank-wheel, f,fixed on a suitable driving-shaft for revolving it (the said wheel) inorder to produce a reciprocating or pendulous movementof the boarderover the bed.

Below the pivot-carrier c is an adjustable stop or screw, f, whichscrews vertically through a cross-piece, g, and serves as a means ofregulating the extent of downward movement of the boarder relatively tothe bed, as

the thickness of the sheet of leather to be boarded may require.Furthermore, there is pivoted to the pivot-carrier c, or the shankpivoth, extending therefrom, a connectionbar, 7;, which, at its lower part,is pivoted to the shorter arm of a lever, 70, pivoted to the frame D,and arranged as represented. A connecting rod or bar, Z, is jointed tothe longer arm of the said lever, and also to the shorter arm of a pedalor foot-lever, m, pivoted to one of the table-legs, and arranged asshown.

A weight, I, sufficient to effect the upward movement of the boarderaway from the bed, is applied to the rod Z. I I

On pressing one foot on the longer arm of the lever m and moving thesaid lever, the boarder may be depressed until the pivot-carrierc may beestopped by the adj ustable stop f.

In using the machine, a person first lays the sheet of morocco orleather in a folded state on the bed, and. While the boarder is inmovement toward the crank-Wheel such boarder is to be depressed upon thesheet and held down thereon until the movement may be completed, thesheet being turned and submitted to a continuance of such operationsuntil it may have I been properly boarded.

I claim-- In the leather-boarding machine, the combination of themovable pivot-carrier c and its adjustable stop f with the pendulousboarder 0, its shank b, cranked wheel f, and fnrcated connecting-rodE,'and with the two levers Is m, connecting bars or rods t l, andoverbalance-weight I, all being arranged, applied, and to operatesubstantially as set forth.

LYMAN P. WASON.

Witnesses:

R. H. EDDY, W. W. LUNT.

